This Week at Physics

 
<< February 2011 >>
 
 >>
 >>
 >>
 >>
 >>
Sun Mon Tue Wed Thu Fri Sat
   1   2   3   4   5 
 6   7   8   9   10   11   12 
 13   14   15   16   17   18   19 
 20   21   22   23   24   25   26 
 27   28   
 
Add an Event Edit This Event

Events at Physics

<< Fall 2010 Spring 2011 Fall 2011 >>
Subscribe your calendar or receive email announcements of events

Condensed Matter Theory Group Seminar
Weyl Problem and the Casimir Effect in Spherical Shell Geometry
Date: Monday, February 7th
Time: 4:30 pm
Place: 5310 Chamberlin
Speaker: Hussain Zaidi, University of Virginia
Abstract: We compute the generic mode sum that quantifies the effect of the change of spectrum of a harmonic field when a spherical shell is inserted into the vacuum. This encompasses a variety of problems including the Weyl spectral problem and the Casimir effect of quantum electrodynamics. The connection between the Weyl problem and the Casimir energy allows us to resolve a long-standing controversy regarding the question of universality of the Casimir self-energy. Specifically we demonstrate that in the case of a scalar field obeying Dirichlet boundary conditions on the shell surface the Casimir self-energy is cutoff-dependent, while in the case of a conductive shell the Casimir self-energy is universal.
Host: Maxim Vavilov
Add this event to your calendar
©2013 Board of Regents of the University of Wisconsin System